Vernier drilling-gage



E. MQULDS.

VERNIER DRILLING GAGE.

APPLICATION FILED MAYH, 1917.

1,335,347. I Patented 1920.

H B FIG.|. i 1

has "I 1m... "mhE- WWII"! m mm." mm, lm...

EDWARD MOULDS, OF MANCHESTER, ENGLAND.

VERNIER DRILLING-GAGE.

To all whom it ma concern:

Be it known t at I, EDWARD MoULns, a subject of His Majesty the King of England, and resident of Manchester, in the county of Lancaster, Kingdom of England, have invented certain new and useful Vernier Drilling-Gages, of which the following is a specification.

This invention which is intended to provide means for accurately drilling and spacing holes such as holes injigs, etc., where positive accuracy is -required, con sists of a grooved 'raduated bar disposed in a horizontal positlon and capable of moving up .or down along vertical pillars or suitable slides and of being clamped at a suitable height from the work, and a second graduated horizontal bar disposed at right angles to and constructed to slide along the first bar,- a Vernier scale being provided to enable the amount of movement to be determined, and also means for clamping the second bar when in the desired position.

The second bar is slotted in such a way that a ledge is formed in'the slot and pro vided with two sliding blocks containing the drill bushes, which blocks slide along the ledge, Vernier scales bein provided to en- Specification of Letters latent. Patented Application filed m 8, 917. Serial No. 167.351.

able the exact amount 0 'movement to be determined, and means for clamping the bush blocks in position when adjusted. The

'blocks may also be provided with a suitj which Figure 1 is a perspective view of the instrument;

Fig. 2 is a transverse section of the second slotted bar, and Fig. 3 is a same.

The first bar A is mounted on vertical longitudinal section of the k tudinally in such a way that an interior ledge is formed along the walls of the slot between the top and bottom edges of the to have one end fit in and slide'alon Mar. 30, 1920.

bar, on the top of which ledge the drill bush blocks H and H ,are supported and can slide, and the underside of which ledge the square bolt heads J and J of the bolts engage. said blocks and may be tightened by the nuts K and K thus clamping the bush The bolts pass-through holes in blocks to the bar, the distance apart of, the

bushes L and L being determined from the Vernier scale E v The drilling of holes of different diameter maybe effected by the use of slip bushes in the usual .way.

The bar E is also provided with a Vernier M for reading from the scale A on the first bar A, and with a screw studN which, passing through a slot P in the bar A provides together with a wing-nut N a means of clamping the two bars at right angles a) 'each other in any adjusted position.

What I claim is '1. A drilling age comprising a grooved bar and a slotte bar, the grooved bar having means whereby it may be vertically adjusted and the slotted bar being constructed groove of the (grooved bar, a horizonta slot in the groove bar intersecting the, groove thereof, a stud in said horizontal slot and a nut on the stud, said stud and nut providing said bar along saidpilla'rs or sli es, a slotte bar having its inner end fitted in and adjustable along the roove of the firstmentioned bar, means or holding said slottedbar in its adjusted position, and adjustable drill bush blocks carried by the slotted bar. 3. A drilling gage comprising a vertically adjustable horizontal'bar, (a second horizontal bar supported by the first-mentioned bar and horizontally adjustable along the same, said second bar being slotted to form the an interior ledge extending'alon the walls of the slot at a point between t e top and bottom edges of the bar, drill bush blocks extending across the slot of the second bar and supported by. and slidable on said ledge,

' screws havin vertically disposed pillars or slides, a horizontal bar connecting said pillars or slides, means for vertically adjusting said bar along said pillars or slides, a second hori-' zontal bar havingits inner end fitted to and 10 adjustable along the first horizontal bar,

' and drill bush blocks carried by the second horizontal .bar. I

In testimony whereof I have hereunto signed my name.

EDWARD MOULDS. 

